- Britannica Online: Utopia
- America and the Utopian Dream - this site has information on 24 communities throughout U.S. history that were founded with utopian ideals.
- Student Resource Center Junior: Traditional-Orthodox Jews
- Britannica Online: Hasidism
- About: Hasidism
- About: Ultra-Orthodox Judaism (Hasidic Jews)
- Discovering World History: Ba'al Shem Tov